You'll find it difficult to break it.
5 seconds sound clip from the Shaolin vs. Lama (1983) movie soundboard.
You can hear this line at 01:11:49 in the DVD version of the movie.
Quote context
[...]
- You can imagine the blow... it can easily kill, that's why you use it rarely.
- Listen... softer, the better.
- You'll find it difficult to break it.
- If you want to use your finger, you'll have to train hard everyday.
- Where have you been? Don't you know how late it is?
[...]